Fig. 3

a Receiver operating characteristic (ROC) curves of a voxel-based comparison of [⁶⁸Ga]Ga-RM2-PET (RM2-PET) SUV with the 3D-Histo value (1 = tumor, 0 = no tumor) for each patient and, additionally, for all patients’ voxels combined (brown dashed line). A combined curve calculated overall patients’ voxels is plotted as a brown dashed line. b ROC curves of a voxel-based comparison of [⁶⁸Ga]Ga-PSMA-11-PET (PSMA-PET) SUV with the 3D-Histo value, taken from Zamboglou et al. [40] for comparison. c ROC curves for voxel-based summated data of RM2-PET and PSMA-PET scans (RM2 + PSMA) with 3D-Histo value as reference. d Averaged ROC curves for PSMA-PET (blue), RM2-PET (red), and summated data RM2 + PSMA (green) with 3D-Histo value as reference